Formula TiF4 Density 2.8 g/cm³ Appearance white powder; hygroscopic | Molar mass 123.861 g/mol Melting point 377 °C | |
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Titanium(IV) fluoride is the inorganic compound with the formula TiF4. It is a white hygroscopic solid. In contrast to the other tetrahalides of titanium, it adopts a polymeric structure. In common with the other tetrahalides, TiF4 is a strong Lewis acid.
Preparation, structure, reactions
The traditional method involves treatment of titanium tetrachloride with excess hydrogen fluoride:
TiCl4 + 4 HF → TiF4 + 4 HClPurification is by sublimation, which involves reversible cracking of the polymeric structure. X-ray crystallography reveals that the Ti centres are octahedral, but conjoined in an unusual columnar structure.
TiF4 forms adducts with many ligands. One example is cis-TiF4(MeCN)2, which is formed by treatment with acetonitrile.
References
Titanium tetrafluoride Wikipedia(Text) CC BY-SA